Thank you, karthik. My UAE residence visa will expire at the end of August. I will be driving from Abu
Dhabi to Doha, through KSA on a transit visa. Your information tells me that I should have no problem crossing the Saudi-Qatari border on just my U.S. passport.

I will actually be in possession of a work entry visa, but I was just curious if I would be able to cross the Saudi-Qatari land border on just a U.S. passport.